The museum is located within the historic Market House, a distinctive mid-Victorian
building in the centre of Castle Cary.

We have a large collection of domestic and agricultural implements, archaeological
and historical information and artefacts. Displays include our geology section showing
that this area of Somerset was once under the sea; the life of diarist Parson James Woodforde;
Douglas Macmillan, the founder of Macmillan Cancer Support; T S Donne's Rope and Twine Works;
and John Boyd's Horsehair Weaving factory.

The museum is funded almost entirely by voluntary contributions and staffed by volunteers.